Jewelry clasp



Feb. 20, 1940. H. RADzlNsKY 2,191,084

JEWELRY CLASP Filed Sept. 14, 1939 INVENTOR Patented Fel5.2o,194o

N rainer certes JEWELRY CLASP Harry Radzinsky, New

York, .,N. Y., assignor to` Katz & lllgush, Inc., New York, N. Y., a. corporaf tion or NewYork Application September 14, 1939, Serial No. 294,821 i fy i i y 7Claims.

This invention relates to clasps or similar iastening devices such as are employed in necklaces, bracelets, wrist watches and `other articles of jewelry. The object of the present invention is to prom vide a clasp of this character which will be of substantial construction; 4whichcannot be inadvertently opened; which will provide a smooth exterior without projecting parts and which can be easily embodied in various designs to suit the requirements of the article of jewelry to which the clasp or fastening member is attached.

In the accompanying drawing, in which an illustrative embodiment of the invention is shown, Fig. l yis a top view ci a claspor fastening device made in accordance with the invention; Fig. 2 is a sectional view on the `line iwi oi Fig. l, looking in the direction of the arrows; Fig. 3 is a top View of the clasp in open position; and Fig. /l is` a view of the underside .of the cover vmember or top of the clasp.

In the embodiment ofthe invention illustrated in the drawing, Iindicates' the elongatedbody member or base of the clasp. At `one end, the

body member l is xedly attached to a link i!` secured on the end oi afbracelet, necklace, wrist watch band, or other article of jewelry, `portions of which are shown at 3.

At its top, the body member l is formed with a relatively shallow depression or recess fi having' end walls il near the opposite ends of thel At 9 is shown the cover member of the clasp,

40 the same conforming in general shape `to the body member l, the cover member having a top f plate I0, which when the clasp isin closed position, overlies and covers the depression. t, so `that the top of the clasp presents a smooth, un broken appearance, as `seen in Fig. l.

ing downwardly from the top plate l@ is a skirt or Wall Il which closely fits within the depression or recess 4, said skirt or wall forming a hollow chamber l2 in thebody oi the cover member.

`Secured within the chamber l2 oi the cover `m`e1nber S is a spring i3, which is substantially C-shaped and the same issecured in pla-ce within the chamber by having its central portion soldered or otherwise attached to a portion of the Extendskirt or wall l l at or about the point lll in Fig. 4.

The spring i3y is provided with free ends I5 adjacent to each of which is formed an outwardly distorted portion it which projects through slot l1 (Fig. 2) in each of the end walls 5 l la. The projecting portions it of the spring constitute resilient detente, which, when `the cover member is in closed position, as in Figs. y l and 2, snap into engagement with complementary recesses i8 provided in theopposite end 10. walls 5 of the depression li."

Cover member ii is provided `with a stem fill which may be formed integral withthe'cover or may bean attached element, `said `stern constituting a pivot for the cover member and piv- 15 otally attaching the same `at a centralpoint to the base portion. o

In itsclosed positionthe clasp is shown in Figs. l and 2, wherein it will be` seenthat the plate portion lil of the cover member cverlies and covers recess or depression fi. At this time, 'the resilient detents I6, integrallyformed as a. part of spr-ing` i3, have snapped into engagement with recesses it in walls 5 andare thus holding the `cover member against inadvertent rotative or turning movement withrespect to the body member. At this time also, the` cover member overlies and consequently closes, the open upper end oi slot il so that movement or cross of said slot is prevented.

To open the clasp merely requires the appli` cation of suiicient manuallyapplied rotative force to the cover member Eto cause the detents it? to be forced out of the recesses` ld `and the cover member swung around pivot 2li to the angular position of Fig. 3, wherein it will be noted that slot 6 is uncovered and the cross-barlsmay be lifted out of the same to disengage link 3 from its engagement with said slot.

When the clasp is closed, it will be noted that li0 the exterior of the same is smoothand unbroken and provides no projecting elements to catch onto clothing and thereby inadvertently open the clasp. The two detentsat the opposite ends of the cover member serve to positively prevent rotative movement of the cover member when the device is closed. While two of these detents are shown, to provide a maximum of protection, one detent, located at one end only of the cover` member might also be employed. This and other modifications may b-e made without departing from the spirit of the invention.

What I claim is:

1. `A jewelry clasp comprising, a body member provided with adepression in one of its faces and a slot extending across said depression, a wall at each end of the depression, a cover member rotatably attached to the body member and adapted to normally cover the slot therein, said cover member having a skirt extending into the depression, detents projecting out of said skirt, the end walls of the depression being provided with recesses for detachable engagement with said` detents.

2. A jewelry clasp comprising, an elongated body member having a depressed upper face, a

recessed end wall at each end of said depressed portion, a cover member pivoted on said body portion, said cover member having a hollow part fitting within the depressed portion, springpressed detents located at the opposite ends of said hollow part and projecting beyond said ends for snap engagement with the recesses in the end Walls 01"' the body member, the depressed portion of the body member being provided with an shape thereto, said cover member being provided with a skirt portion iitting within the depression and conforming in shape thereto, spring means within the skirt having detent elements projecting out of and beyond the skirt, and recesses formed at the` ends yof thev depression for snap engagement with said detent elements when said cover member is rotated to lie complementarily to the body member.

4. A jewelry clasp comprising, a body member provided With a ydepression in its top, a slot formed in said depression and'extending downwardly therefrom for the reception of a cross bar on a jewelry link, a cover member pivoted to the body member and adapted to normally overlie and close the depression and slot, said cover member having a hollow chamber in which a C- shaped spring is located, said spring having free endsA .formed with detent portions extending out of the ends of the chamber, the depression having end Walls provided with recesses for detachable engagement with said detent portions.

5. A jewelry clasp comprising, a body member provided with an open-top slot in its upper face, a cover member provided with a stud by which it is pivotally attached to the body member, a spring within said cover member, said spring having end portions projecting out of the cover member and forming detents, the stud for pivotally attaching the cover member `to the body member being located between the detents, the body member having end walls formed with recesses for detachable engagement with said detents to retain the cover member in closed position to cover the slot, said cover memberbeing rotatable to expose the slots when said detents are disengaged from the recesses.

6. A jewelryclasp comprising, a body member provided with an open-top slot extending to one face, of the body member, a cover member rotatively attached to the body member and rotatable `to open or close the slot, a spring within the cover member having `detent portions projecting outside of the same, the cover member being rotatively attached to the body member at a point between the detents and means on the body member for co-actionwith said detent portions to retain the "cover member in closed position.

7. A jewelry clasp comprising, a body member provided with an open-top slot in its upper face, a cover member adapted to normally overlie the body member and cover and close the open top of said slot, saidcover member having a hollow chamber dened by side walls and endv Walls, said cover member being pivotally attached to the body member at a central position between the Vend Walls, a C-shaped spring contained within the chamber, said spring being secured at a point between its ends to one of the side walls and having free ends formedfwith detent portions extending out of the end Walls of the chamber, said end walls having apertures through which saidl detent vportions protrude, the body member having portions formed with recesses for detachable engagement with said detent portions.

HARRY RADZINSKY. 

